1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc8f540e52e4407f1ac34a29c573bfe6a1dcd1246e296fe59485af3273902b9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/658cfd42-4c69-4717-80bd-26ced6a6ba76.json and https://artists.proofprofile.net/proofs/artist/658cfd42-4c69-4717-80bd-26ced6a6ba76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32330d8e3ccfdd80bc12e97e481936a9da7be9be2c4e0308bd199fc645046888. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfa3a9ec000257ec88ffab50cbba3241363d7b0ba825edb0bd542df59a69298. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20792115034021581427e758289f78e05a19d480412385fca55115f3dad98a4b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77fca5cc9846dbaaa06ed3413ea87d0aa4cf5ebdf2f27f344c819f185caa421. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6f5d69297c4e4c215a6719a3025a497ce27f84fd77d1ae88ac6c4d90e6b5bd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60957cb85094818f3ddd70314a5e1617f99b518c200fd84a11ff8a44886fc540. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9702d858d7dfacd718d2732c1bbff6129fbe4a953d373cae736856c5928edf79. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd60ba80d2752796bf9ddffb859b3129db4eb21fdc1184d45011d4b1de2e6168. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcced13811e85f18221507fe31fb160944be8b0c816d6baaaecc69eb091842c52. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed057ee923f5ea4ce7f304e72f745e0a137ac88393ff8c6a3f24101846c39ef5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bfd759191ed15b90533c07af4ded1d159b7caa133e4e9f8b6f606661f8f0d4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d493d63da3dcb7bc878585b1f7c1f30046f609cb60d99da2b1e30c28884a4d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1803a6a94ffc42265fe8a2baadce187cdf3bf105155f2e3fa53c4b83de2d05a7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99ce1b1b8377e1d458528e63050e80f2f94341b4bf286db4f851f3eb5c0cbe4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8595c1a2e01fb131325702757e593040e1a113f81aa759911dbfa672b50bab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38a47a0c61fbce159920691a26bac0a28335ab766820ecb0cecffbf66fc4b1d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cca81191693bdf431b0dd526b232faf71cc7de49c86c5635d7ec3cf1161b7c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32330d8e3ccfdd80bc12e97e481936a9da7be9be2c4e0308bd199fc645046888. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f9859b6abd387c3fb22d17f8eb38f6a611c27c900e899a82078f4ba93ce46b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2000485.